ʻIke laulā:

ʻO Dimethyl carbonate, i kapa ʻia ʻo DMC, he wai aniani ʻole, me kahi ʻala ʻawaʻawa i ka mahana o ka lumi. ʻO ka density pili (d204) he 1.0694, ʻo ke kiko heheʻe he 4 ℃, ʻo ke kiko paila he 90.3 ℃, a ʻo ke kiko flash he 21.7 ℃ (wehe) 16.7 ℃ (waha pani), refractive index (nd2Chemicalbook0) 1.3687, hiki ke lapalapa, ʻaʻohe ʻawaʻawa. Hiki ke hoʻohuihui ʻia me nā mea hoʻoheheʻe organik āpau e like me nā alcohols, ketones, a me nā esters i kēlā me kēia ʻano, a he mea hoʻoheheʻe iki i ka wai. Hiki ke hoʻohana ʻia ma ke ʻano he methylating reagent. Hoʻohālikelike ʻia me nā methylating reagents ʻē aʻe, e like me ka methyl iodide a me ka dimethyl sulfate, ʻoi aku ka liʻiliʻi o ka ʻawaʻawa o ka dimethyl carbonate a biodegradable.

Nā Waiwai Kemika

He wai ʻala ʻole a moakāka me kahi ʻala ʻawaʻawa. ʻAʻole hiki ke hoʻoheheʻe ʻia i ka wai, hiki ke hoʻoheheʻe ʻia i nā mea hoʻoheheʻe organik e like me ka ethanol a me ka ether.

hoʻohana

1. Hiki i kahi ʻano mea hoʻoheheʻe haʻahaʻa-ʻawahia hou ke pani i ka toluene, xylene, ethyl acetate, butyl acetate, acetone a i ʻole methyl ethyl ketone a me nā mea hoʻoheheʻe ʻē aʻe i nā ʻoihana pena a me ka hoʻopili. He huahana kemika ʻōmaʻomaʻo aloha kaiapuni ia.

2. He mea methylating maikaʻi, mea carbonylating, mea hydroxymethylating a me ka mea methoxylating. Hoʻohana nui ʻia ia ma nā kahua o nā antioxidants meaʻai, nā mea pale mea kanu a me nā kahua ʻē aʻe. He mea maka kemika i hoʻohana nui ʻia.

3. He pani kūpono no nā kemika ʻawahia loa e like me phosgene, dimethyl sulfate, Chemicalbook methyl chloroformate, a pēlā aku.

4. Hana i ka polycarbonate, diphenyl carbonate, isocyanate, a pēlā aku.

5. I ka lāʻau lapaʻau, hoʻohana ʻia ia e hana i nā lāʻau anti-infective, nā lāʻau antipyretic a me analgesic, nā lāʻau vitamina, a me nā lāʻau lapaʻau o ka ʻōnaehana nerve waena.

6. Ma ke ʻano o nā pesticides, hoʻohana nui ʻia ia e hana i ka methyl isocyanate, a laila e hana i kekahi mau lāʻau carbamate a me nā insecticides (anisole).

7. Nā mea hoʻohui kinoea, electrolyte pākahiko lithium, a pēlā aku.

Loaʻa ke ʻano hana ma o ka hoʻohui ʻana i ka methyl chloroformate a me ka methanol. Loaʻa ka mea maka methyl chloroformate i hoʻohana ʻia i ka hana ma o ka hana ʻana o ka methanol a me ka phosgene. I ka wā hoʻomākaukau, hiki ke hoʻohui ʻia kēia huahana phosgenation ma ka hoʻohui ʻana i ka methanol keu a me ka refluxing i ka hana me ka ʻole o ka hoʻokaʻawale ʻana e synthesize i ka dimethyl carbonate. Ua kapa ʻia ka hana ma luna nei ʻo ke ʻano phosgene kuʻuna ma Chemicalbook. Pili ke ʻano transesterification i ka hana transesterification ma waena o ka ethylene carbonate a i ʻole propylene carbonate a me ka methanol e hana i ka dimethyl carbonate. Loaʻa i kēia ʻano hana ka hua kiʻekiʻe, nā lako hana haʻahaʻa, a me nā kūlana hana mālie. Eia nō naʻe, ua kaupalena ʻia ke kumu o nā mea maka e ka hoʻomohala ʻana o ka ʻoihana petrochemical a haʻahaʻa ka helu hoʻohana ʻana i nā mea.

ʻIke Hoʻokaʻaʻike

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